ATP1A3基因编码钠钾ATP酶α3亚基,属于P型ATP酶家族中的钠钾ATP酶家族。这个基因家族主要负责通过水解ATP来维持细胞内外钠钾离子的浓度梯度,对神经元的电活动和信号传导至关重要。ATP1A3主要在神经元中高表达,特别是在大脑的基底节、丘脑和小脑中。该基因的突变会导致钠钾泵功能异常,影响神经元兴奋性和神经递质释放。目前已发现超过50种ATP1A3突变与多种神经系统疾病相关,最常见的是交替性偏瘫(AHC),表现为发作性偏瘫、眼球运动异常和发育迟缓。其他相关疾病包括快速起病的肌张力障碍-帕金森综合征(RDP)和小脑共济失调、构音障碍和眼肌麻痹(CAPOS)综合征。突变通常以显性方式遗传,多数为错义突变,影响蛋白质的离子结合位点或ATP水解功能。ATP1A3过表达可能导致神经元过度兴奋,增加癫痫发作风险;而表达降低则可能导致神经元功能抑制,引起运动障碍和认知缺陷。该基因与ATP1A1和ATP1A2等其他α亚基共同组成钠钾ATP酶家族,这些亚基在不同组织中分布不同但功能相似,都参与维持细胞膜电位和细胞体积调节。ATP1A3的特异性在于其对神经元功能的独特贡献,特别是在动作电位产生和突触传递中的关键作用。研究还发现ATP1A3与能量代谢相关,因为钠钾泵消耗大量ATP,其功能障碍可能导致神经元能量危机。
The protein encoded by this gene belongs to the family of P-type cation transport ATPases, and to the subfamily of Na+/K+ -ATPases. Na+/K+ -ATPase is an integral membrane protein responsible for establishing and maintaining the electrochemical gradients of Na and K ions across the plasma membrane. These gradients are essential for osmoregulation, for sodium-coupled transport of a variety of organic and inorganic molecules, and for electrical excitability of nerve and muscle. This enzyme is composed of two subunits, a large catalytic subunit (alpha) and a smaller glycoprotein subunit (beta). The catalytic subunit of Na+/K+ -ATPase is encoded by multiple genes. This gene encodes an alpha 3 subunit. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2012]
由该基因编码的蛋白质属于家庭P型阳离子运输ATP酶,并以钠/ K + -ATPases的亚科。的Na + / K + -ATP酶是负责跨质膜建立和维持Na和K离子的电化学梯度的整合膜蛋白。这些梯度是渗透调节必不可少的,对于各种有机和无机分子的钠耦合传输,以及用于神经和肌肉的电兴奋性。这种酶是由两个亚基,一个大的催化亚基(阿尔法)和一个较小的糖蛋白亚基(测试版)。的Na + / K + -ATP酶的催化亚基由多个基因编码。该基因编码一个α亚基3。已发现该基因编码不同亚型选择性剪接转录变异体。 [由RefSeq的,2012年1月提供]
ATP1A3基因(以及对应的蛋白质)的细胞分布位置:
ATP1A3基因的本体(GO)信息:
| 名称 |
|---|
| 4024 cAMP signaling pathway [PATH:hsa04024] |
| 4022 cGMP - PKG signaling pathway [PATH:hsa04022] |
| 4911 Insulin secretion [PATH:hsa04911] |
| 4918 Thyroid hormone synthesis [PATH:hsa04918] |
| 4919 Thyroid hormone signaling pathway [PATH:hsa04919] |
| 4260 Cardiac muscle contraction [PATH:hsa04260] |
| 4261 Adrenergic signaling in cardiomyocytes [PATH:hsa04261] |
| 4970 Salivary secretion [PATH:hsa04970] |
| 4971 Gastric acid secretion [PATH:hsa04971] |
| 4972 Pancreatic secretion [PATH:hsa04972] |
| 4976 Bile secretion [PATH:hsa04976] |
| 4973 Carbohydrate digestion and absorption [PATH:hsa04973] |
| 4974 Protein digestion and absorption [PATH:hsa04974] |
| 4978 Mineral absorption [PATH:hsa04978] |
| 4960 Aldosterone-regulated sodium reabsorption [PATH:hsa04960] |
| 4961 Endocrine and other factor-regulated calcium reabsorption [PATH:hsa04961] |
| 4964 Proximal tubule bicarbonate reclamation [PATH:hsa04964] |
| 名称 |
|---|
| Ion channel transport |
| Ion transport by P-type ATPases |
| Transmembrane transport of small molecules |
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| DYSTONIA 12 | 0.487328931 | 28 | 16 | BeFree_CLINVAR_CTD_human_ORPHANET_UNIPROT |
| CAPOS syndrome | 0.360542884 | 2 | 1 | BeFree_CLINVAR_ORPHANET_UNIPROT |
| Alternating hemiplegia of childhood | 0.245700279 | 21 | 3 | BeFree_CTD_human_ORPHANET |
| ALTERNATING HEMIPLEGIA OF CHILDHOOD 2 | 0.24 | 2 | 32 | CLINVAR_UNIPROT |
| Dystonia | 0.126253095 | 13 | 0 | BeFree_CTD_human_LHGDN |
| Parkinsonian Disorders | 0.125167327 | 9 | 0 | BeFree_CTD_human_LHGDN |
| Ventricular Dysfunction, Left | 0.12 | 1 | 0 | CTD_human |
| Heart failure | 0.12 | 1 | 0 | CTD_human |
| Degenerative polyarthritis | 0.12 | 1 | 0 | CTD_human |
| Bipolar Disorder | 0.005276948 | 3 | 0 | BeFree_GAD |
山东省济南市章丘区文博路2号 齐鲁师范学院 genelibs生信实验室
山东省济南市高新区舜华路750号大学科技园北区F座4单元2楼
电话: 0531-88819269
E-mail: product@genelibs.com
关注微信订阅号,实时查看信息,关注医学生物学动态。